had fallen in love with. >> reporter: 20 years later, r.a.f.t. is an educational juggernaut. 100,000 cubic feet of stuff a year has been transformed into educational material. the finished projects and some raw materials are made available to 8,000 teacher members serving more than 600,000 students in the south bay and peninsula. r.a.f.t. is as big as mary thought it would be because she knew all along it would be stuff that students would love. >> it feeds your soul when you see that response. >> reporter: after 20 years at the helm, mary is stepping down this spring. she's looking to be reborn a bit herself. an interesting question for mary. if you had all the money in the world, wouldn't it be great because you wouldn't go out business? she said no, what this does inspiring imagination, creativity in individual teachers is something we would always need. you can never really budget for that. >> teachable projects that you learn something from. >> all the money in the world, they would still be doing what they're doing giving teachers inspiration for math and science projects.